Smith, who set up the sustainable travel website three years ago, attended a parliamentary ceremony last week alongside some of her fellow ambassadors, including former TV newsreader Jan Leeming and adventurer David de Rothschild.
Year of Green Action is a scheme organised by the Department for Environment, Food and Rural Affairs (Defra) throughout 2019, designed to “connect more people with the environment and raise awareness about the simple steps everyone can take to make a difference to the natural world”.
Smith admitted being selected as an ambassador by Defra “came out of the blue”.